Jaime Rodriguez in this post describes some new features of the SystemTray class in upcoming WP7 Mango release, I won’t repeat them since Jaime’s post is quite explanatory, I’ve instead investigated more the “Progress” feature mentioned on that post. Here’s how I’ve configured my SystemTray on MainPage.xaml: <phone:PhoneApplicationPage x:Class="SystemTrayBackground.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" ...